Oracle Monitor Damage Reconstruction After the Machine Powers Off Abnormally

The problem scenario

    The machine is equipped with an Oracle database. When the power is turned off abnormally, an exception occurs in the listener program, resulting in the prompt "The listener program cannot currently recognize the service requested in the connection identifier" when connecting with PL/SQL.

2. Solutions

1. Listener configuration override rebuild

2. Use the command line lsnrctl stop/start to close and restart the monitor

3. If the original problem still occurs in the PL/SQL connection, the host can be restarted.